Valve



March 10 1925- 1,529240 R. C.\CHESNUTT VALVE Fi1ed March 11, 1922 3 Sheets-Sheet 1 ROZ UIL C C'esnu INVENTOR ATTORNE).

March 10. 1925- R. c. CHESNUTT VALVE Filqd M arch 11, 1922 3 Sheecs-Shee'c 3 Patented Mar. 10, 1925.

UNITED STATES RALPH C. CEESN'U'I'T, O]? ALLENTOWN PENNSYLVANIA.

VALVE.

Application filed March 11 1922.

T0 all wh0m 1't nwy covwern:

B0 if l nnwn tlmt l. RALPH C. CHESNUTT. a citizen 0f tl:e Unitecl Stalins, residing at Allentown um=.nty of Lehigh State 0f Pennsylvania, lmve invented a certain new and useful Impuwement in Valves. und (leclare the follovving t0 be a full, dem, and exact clescription 0f flxe srune, such as will enable otl1er.s skilled in the art t0 Which it pertains to n1ake und use tl1e san1e, reference being had 130 the accompanying clrawings, which fonn a part 0f this specification.

My invention relates t0 internal co mbustion engines, anal an object 0f my improvement is t0 provide an imprnved arrangen1ent of the valves :1ml related parts tlmt sl1all secure improved lubrication, facility 0f asse1nblin; ancl clisassembling, and othe1 advantages, a1n0ng which is tl1:1t in tlmt kincl 0f multicylinder engine in which the intake valves are locatecl upon one side of a plane through the axis of the cylinders and the exhaust valwas upon the other sicle 0f said plane, all the valves sl1all be actuated from one cam shaft.

In the accompanying drawings:

4 Figure 1 is a side elevation 0f a four cylinder engine emboclying my invention.

Fig. 2 is a plan view of the same, pa1ts being re1noved t0 sl10w tl1e constrnction nmre clearly. That is t0 say, cylinder N0. 4 has fhe cylinder l1ead rennwecl; (rylincler N0. 3, tl1e valves and va'lve casing ri1e removecl; cylincler N0. 2 has the c0ver to tl1e valve casing re1novecl; und in cylincler N0. l, all the p:11ts are present and assembled.

Fig. 3 is a section 0n the line III-III, Fig: 2.

Fig. 4 is a detail section 0n the line IVIV Fig. 3.

Fig. 5 is a cletail section illustrating in section the construction at the pivot oft tl1e rec ker arm.

Fig. 6is a pers'pect'rve 0f the pivot pin f0r t'he rocker arm.

Fig. 7 is a pexspectimwiew of the springcuring clip.

a is the crank case. b, b, b, b are the 'cylinders 0f a f0ur-cylinder internal 00mbustion engine. c is the intake manifolcl, und d is tl1e exhaust manifold. Z is a sec uring flange at tl1e entrance to the intake passage. This flange is lo cated in vertical plane. 21 is a securing flange at the opening from the exhaust pass;1ge which 1s also l0c:it'd in a v'ertical plane c is a scuring Serial N0. 542,888.

flange nn the inlet manifold aclaptecl t0 be secured t0 the flange 7) With tl1ei1 (0D- tiguws facvs in a verticnl plane. a? is a flange Similar t0 0 adapted to be similarly secnred t0 the flnnge 5 upon the exhaust manifolcl a. By thus securing the flanges tl1e Muss seuuring bolts nm v be removed adjacent t0 one cylinder und the cylinder hea l taken ofl' without disturbing the other c0nnections, .as illustrated with reference to cylinder N0. 4 in Fig. 2.

f is a mcker arm. q is the intake valve stem extending upward through tl1e upper end 0f the cylinder head. f is a stanclard secnred at its lower encl t0 the cylincler head and extending upvvarcl and at its upper end all'ording a pivotal support f01 the I'OCl IGI arm f. The inne1 en l 0f the rocker arm f bears upon the upper end of the valve ste1n 7. At the onter end 0f saicl rocker arm is pivotally secured the connecting piece 0f the valve actuating 1'0d e. The upper encl of t he rod c is screwed into a threaded cavity in the c0n1'1ecting piece e and is provicled with a nnt e which is Set up against tlle lower end of the connecting p1ece 0 to prevent the accidental rotation of said rocl.

The rocker arm f is pivoted in the upper end 0f the standard f by the floating p1n f* having conical cavities f in its ends. f is a spring clip which extends over tl1e upper encl 0f the rorzker arm f"" and its actuating rods n, 6 and hus downwardly-extending lin1bs provided witl1 lugs f adapted t0 engage in the conical cavities f und tl1e end 0f the floating pin f ancl hold said pin in place. f is a valve ste1n guide extenrling thrmmh an opening in the upper end 0f the cylimler hend in which the valve ste1n -0 reciprocates. g" is a ferrule having fomminous Walls surrounding the valve gnicle 57 9 is' a spring, the lower encl 0f which bears against the npper encl 0f tl1e ferrule g und the upper encl against a cap secured t0 the upper end Qf the valve stem y. Said Spring 57 acta t0 close the intake valve.

71 is a sin1ilar rocker arm t0 that above described aclapted t0 actuate the valve stem h 0f tl1e exlwust valve ancl similruly pivotecl in ancl supporferl by a Standard altogether silnilar t0 the standard f. There is 11 ferrule g und spring upon the exhaust valve entirely similar to that described f0r the int ake valve.

By reference to Fig. 2, it Will be seen filmt the exhaust and intake valves are locatd npun opposite sides 0f vertieal plane threugh the lflll'5 0f the cylinders. These ruclcer anns ure set at an angle to the trrmsverse lines through %he centers of the cylinders. es shmvn nmst distinetly in Fig. J: so thut the ends t0 l;:e enguged hy the (um ro ls untend t0 the sinne side 0 the engine und in a line with each ether parallel te the cum sl1ufi where they are ezu-h secured t0 an actuating rod e, a These rods are of the sann: ;w:rnstruetion and exlend \erticall r dmvnwnrd parallel one to the other tn n point uhm'e the x-zun slmft (1* where the v nn=.y be nctunted b c the nsuul cams u j is a valve rocker easing having a lower horizontal Wall extending 0ver the npper surface of the cylinder head and having n wall extendinp vertically upwurd fr01n the periphery 0f suid horizontal wall. j is an upenin;g in the lower Wall 0f seid cnsing having c0nicnl (IOWI1W2UTUY extending (O11- verging walls (Fig. 3) in position t0 permit the passage f an :1efuating red v, v'-. j is a c0ver fwr the valw2 1flekcr .f\f;e having ils upper end closed except fwr a snrall pening through an upwardly exfending nipple j. j indicates an aperture in fhe Wall of the nipple ;j*. y" i vertieal r0d seeured in tl1e eylinder head and extending vertically upward inlo und coaxial Witli tlie nipple y". j is a nut so constructed that it .shall engage screw threads at the upper end of the r0d 7' and Sl1(lll bear against und cl0se tl1e upper end 0f the nipple j. By screwing up 011 the nut -7' the enver j is fastened upon the casing j. The apertures j Lhr0ugh the wa.ll 0f the nipple j afiords a breathing passage through the enelosure 0f the roeker arms.

k is a tubular guide piece fitted in an apar- Lure in the upper Wall 0f the cranl: ;asing 0 imd lmving 11 flange hearing 0n the upper snrface of said wall. c is the en lar; red l0wer end et the r0d Tl1is fits nnd is adapted t0 reciprocate in the guide und extends downwnrd with its lower end ndjaeent t0 the cum 1'0d u in position tu be actuated l y tlie usual can1 0 is a tube engaging the upper end of the guide lo and forming an upward extension thereof. m is a tube surrounding the 1'0d e nnd having a conical upper und m the interior walls of which nre adapted iO engage again5t the outer Walls 0f the nonical pening j 0f the roeker nun ensing j. m e is a spring hearing ut 0ne end against the npper end ef the enlargement e" of the rod e und at its upper end against tlie l0wer ends 0f the tube m. The spring m e acts t0 retract the 10d e und forces the tuhe m upward holding its c0nical upper end m in firm engagement With the walls 0f the mnicul opening 7 The casing j is secured against the upper end 0f the cylinder head by a nut f on the standard f und b a similar nut 0n the sfandard h und also hy the flange 0n the mlve sten1 guide g and a similar flange 0n the guides f0r the exlmnst stem The ferrules g with their ventilnting walls sene as u lreut-insulating 1neans tu prevenl the everheating of the springs (7".

Referring to Fig. 4, !lw \\'L'lllf\ flf fluguide are grou\'@d 219 shmvn :1t /u. so ns tn for1n a ermnecting passage hetween the interior of the eranl wase :md the tulmlnr extension tube m und ihe interior 0f the r0cker arm cnslng. Through these passages a luhricanf. in llw for1n of spray 01 xnisl, passes fron1 the ;rank mse t0 tl1e rocker arm casing und n breutliing passage is afl'erded f0r the crnnl: mse.

In tlie ahove-deseribed cunstrm-tion. n eylinder head may be re1n0ved, the aetuating reds e, e liweing dise a1nected T'rmn the weiter arm und the head being disc mnected frmn the nmniffllds, ms :dmve d@s@rihe l. Tlw wnneefing pie :es pnssing through the :enieal aperlures P und the valves nnd Oll1l valve actuating purts rexnainin; in their nssembled position. Thns the cylinder head may be easily removed und replaeed. The r0d e is held in position by the engugement of its ends and the acti0n 0f the spring m e. It is not neeessary t0 unserew any paart in separating other parts from the tube m.

VVhat I claim is:

l. In an internal combustion engine, a crank case, a casing enelosing the valve operating xnechanism, a valve uctuating rod extending from the casing int0 the crank case, a tube surrounding said rod, said tube having a lower enlarged separate portion, und an upper reduced portion reeeived at one end into said enlarged portion and held upwardlv against seid casing by a sprin surrounding said rod, seid spring dispose within said enlarged portion.

S2. In an interne] combustion engine, a crank ease a casing enclosing the valve operating mechanism :1 valve actuating r0d extending fr0m the casing into the erank ease, a tubular gr.ide for the r0d carried by the crank case, tube surrounding said r0d comprising an enlarged portien engaging seid g'uidei und an upper reduced portion received at the lower end into seid enlarged portion, and a spring surrounding seid r0d within said enlarged portion bearing at one end against the rod and at the other end against the end 0f the reduced portion 0f the tube.

3. In an internal combustion engine, a crank case. a casing enclosing the valve operating mechanism, a valve actuating r0d extending from the casing int0 the crank case, a tube surrounding seid rod. a. spring surrounding said rod one end 0f which spring engages the rod the opposite end 0f the Spring engaging the tube.

4. In combination, in an internal combustion engine, a crank case, a casing enclosing the valve actuating mechanism, a valve actuating r0d extending from said casing into said crank case, said casing having a conical annular portion surrounding said rod. a tube surrounding said rod and aflording a c0nduit passage between said crank Gase and said casing, 0ne end of said tube having a flaring portion removably engaging the coni cal annular portion 0f the casing, a spring surrounding said rod having 0ne end engag ing the rod and the other end engaging tl1e tube to hold it int0 close engagement with the casing.

In an internal combustion engine. a casing enclosing the valve operating mechanisrn, a valve operating r0d extending through the casing, said casing having an annular conical Wall portion surrounding said rod a tube surrounding said rod having a flaring end engaging the conical Wall portion of tl1e casing, a can1 shaft t0 actuate said rod, a spring surrounding said r0d one end engaging the rod t0 hold the sarne toward the cam shaft the opposite end engaging the tube to hold tl1e same toward the cas1ng.

6. In cornbinution, in an internal c01nbustion engine a crank case, a casing enclosing the valveactuating mechanism, a valveactu- Ming rod extending from Said casing int0 said valve c-ase a tube surrounding said rod and aflording a conduit passage between said vulve case und said casing one end 0f said tube having its Wall rernovably engaging against thc wall 0f said casing, a spring having one end engaging against said r0d and the 0tl1er end engaging against the Wall of said tube t0 f0rce the latter into close engaqmnent with the Wall of said casing.

l. In an apparatus of the kind described, a oasing f'01 the valve-actuating mechanism lxaring an 0pening witl1 conical Walls, a tube having a conical end engaging against sai0l conical Walls, an actuating rod passing through said tube and opening and a spring acting against said r0d and against said tube t0 hold its conical end in engagement Witl1 the conical Wall 0f said opening.

I n testimony whereof, I sign this specificat1on.

RALPH C. CHESNUTT. 

